The question is a bit confusing, but I'm assuming you are adding them all up, so the total sum would be 60 items :)
5

+10-15=30
5

=35
<span>

=7
</span>х=49
5√49+10-15=30
30=30

+1+7=4
<span>

=-4
</span>it is <span>no solution
</span>
the penny travels at a faster rate by 56.4 kilometers
penny = 153 for 30 min
penny = 306 for 1 hour
rocket = 208 in 50 min
208/5 = 41.6 *6 = 249.6 in 1 hour
penny is faster by 56.4 kilometers
Answer: 
Step-by-step explanation:
Given : length =
, width = 
Perimeter of rectangle = 2 ( length + width)
Then, Perimeter of given rectangle = 

Hence, the correct expression for perimeter = 